Hi all
i have a 50v 1uf electrolytic cap that i think is a soft start cap for a PWM chip
VIP22a (or smoothing cap for VDD) all the readings on a DER 5000(set @ 120hzand calibrated) are reasonable 0.98uf
tan 85
D 0.04
Q 14
but ESR was 113ohms im guessing the cap is bad so my question why is the ESR is so out of tally with the rest of the readings, is the cap shot (the only other cap i have @ hand is a 50v 10uf is it possible to use that)
Original fault no dc out put but PSU LED lit found 400v cap gone now circuit back up & running with steady 12v output
i have a 50v 1uf electrolytic cap that i think is a soft start cap for a PWM chip
VIP22a (or smoothing cap for VDD) all the readings on a DER 5000(set @ 120hzand calibrated) are reasonable 0.98uf
tan 85
D 0.04
Q 14
but ESR was 113ohms im guessing the cap is bad so my question why is the ESR is so out of tally with the rest of the readings, is the cap shot (the only other cap i have @ hand is a 50v 10uf is it possible to use that)
Original fault no dc out put but PSU LED lit found 400v cap gone now circuit back up & running with steady 12v output
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